7:19 AM

Mexico City, September 19, 1985. It's 7:19 am. The most devastating earthquake Mexico has ever suffered just took place.

Early morning, in a Government building: all the employees have been called for a special meeting.

While they get settled, a violent earthquake suddenly buries all of them beneath nine storeys of concrete and twisted metal.

Stuck beneath the rubbles of the building, the few survivors - amongst which Martin, the night watchman, and Fernando, a senior government official – are left alone in the dark, clinging on for their lives while desperately waiting for help.